a99c2cac84e799d0679400af08f43f0cc825c2da1599dd2e03ff200e6e52dd9e

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
22/08/2024, 05:45

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General

Target

2024-08-22_1330a90468d1e3cab551f549d477aa0f_cryptolocker.exe
Size

38KB
MD5

1330a90468d1e3cab551f549d477aa0f
SHA1

3d4fbfa8b0afc5217da1c907e630c5805917ddee
SHA256

a99c2cac84e799d0679400af08f43f0cc825c2da1599dd2e03ff200e6e52dd9e
SHA512

d3e20344644f27f04ddf54ac159c39634e0ffe965af2ab5d30c717524108f21567a963f666b12c3397923623e61d5125384ed641c9733094f0f34a49ab4eedf7
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITv:qDdFJy3QMOtEvwDpjjWMl7Tv

Score

7^/10

discovery upx

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	2024-08-22_1330a90468d1e3cab551f549d477aa0f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2208	asih.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3000-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000900000002339d-13.dat	upx
behavioral2/memory/3000-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2208-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-22_1330a90468d1e3cab551f549d477aa0f_cryptolocker.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3000 wrote to memory of 2208	3000	2024-08-22_1330a90468d1e3cab551f549d477aa0f_cryptolocker.exe	84
PID 3000 wrote to memory of 2208	3000	2024-08-22_1330a90468d1e3cab551f549d477aa0f_cryptolocker.exe	84
PID 3000 wrote to memory of 2208	3000	2024-08-22_1330a90468d1e3cab551f549d477aa0f_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-08-22_1330a90468d1e3cab551f549d477aa0f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-22_1330a90468d1e3cab551f549d477aa0f_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3000
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2208

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
38KB

MD5
f8f804fb2ebf6bf2aa645547bc2efce3

SHA1
94a4c079bed9f0bc5ff4f0e466d55d12ca79dd44

SHA256
338b3d07981e73ef177c36e9f69d209e8f2c779cb768cadb09ff06af61b4731e

SHA512
7aef8a60b17c442e721d60a63eb50ae25bf811a8246c653c99fbf85746f6e0e68dc5d50023fc8aeb7bfd23f80809e00e553704de5d831e7ee73ade9c5306fc69

Download Submit
memory/2208-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3000-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3000-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/3000-2-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/3000-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3000-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download